<!DOCTYPE html>
<html>
<head>
    <title>扫雷游戏</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
    <style>
        .difficulty-select {
            text-align: center;
            margin-top: 50px;
        }
        .button {
            padding: 10px 20px;
            margin: 10px;
            font-size: 16px;
            cursor: pointer;
        }
        .game-title {
            text-align: center;
            margin-top: 20px;
            font-size: 2.5em;
            font-weight: bold;
        }
    </style>
</head>
<body>
    <div class="game-title">
        <h1>扫雷游戏</h1>
    </div>
    <div class="difficulty-select">
        <h1>选择难度</h1>
        <button class="button" onclick="window.location.href='/beginner'">初级</button>
        <button class="button" onclick="window.location.href='/intermediate'">中级</button>
        <button class="button" onclick="window.location.href='/expert'">高级</button>
    </div>
</body>
</html>